Originally Posted by tessagin

I've seen this with a friend's blocks. She had a few. She pre-washes everything but some of the darker still ran. She took a cooling rack for baking and placed it across her sink. Then placed the blocks upside down on the rack. She mixed some Dawn and water and painted the mixture all over the block. She did pre-wet the block first. Then she let it set for (the Dawn mixture) about 20 minutes. Her reason for placing the block upside down on the rack was so she could rinse the block with her sprayer and the water would run down through the rack and not spread all over the block. She does the same thing when cleaning her quilts outside. She has a rack set up on her patio with a sheet on a metal screen. Looks like quilting bee table. Sheet protects the quilt from any metal imprints or rust that may be on the rack. She also does this with her knitted/crocheted afghans.